Phio TX Cybersecurity Information

Last Revised: November 2026

Quantum XChange provides the following supplementary cybersecurity information for PhioTX-V 4.5.6 under Article 55 of Regulation (EU) 2019/881.

Secure Use

Guidance for the secure configuration, installation, deployment, operation, and maintenance of PhioTX-V 4.5.6

Phio TX Administration Guide, Version 4.5-12

The guide includes preparation and operation of the product, EUCC mode, software updates, and secure acceptance of the delivery.

Secure acceptance, which is the evaluated delivery procedure:

Accept the download link only when it comes through a direct communication from Quantum XChange.
Before downloading, confirm that the Box.com TLS certificate is valid, unexpired, and issued by a trusted public certification authority, and that the browser shows no certificate warning.
After download, compute the SHA-256 or SHA-512 hash of the package with a trusted local tool and compare it with the hash Quantum XChange supplied.
Do not install the package if the values differ. Request a new download link and repeat the check.

Product support for the guide: support@quantumxc.com.

Evaluated Documentation

The documentation evaluated for this product is provided to the customer in the product delivery package and is published on this page.

Document	Identifier
Phio TX Administration Guide	Version 4.5-12
Security Target	Phio TX version 4.5.6, Common Criteria Security Target, Version 1.7
TOE	PhioTX-V 4.5.6

Delivery channel: time-limited, recipient-specific Box.com link, over HTTPS, together with SHA-256 and SHA-512 checksums. The same guide and Security Target are available on this page.

Security Target

Security Support Period

Security support for PhioTX-V 4.5.6, including cybersecurity updates and security patches, is provided through 2029-03-16.

Reporting a Vulnerability

Report vulnerabilities in Phio TX to Quantum XChange PSIRT:

Email: security@quantumxc.com
PGP public key: 9C74 B9B3 8F8C 0557 5D2B 1B3D FFC1 D3EF 7D5A 5D58
Policy, including acknowledgement time and coordinated disclosure: https://quantumxc.com/vulnerability-disclosure/

Use security@quantumxc.com for vulnerability reports. Use support@quantumxc.com for product-support questions.

Security advisories

Publicly disclosed vulnerabilities and cybersecurity advisories for PhioTX-V 4.5.6:

https://quantumxc.com/security-advisories